Finding the Fourth Proportional to 3,855.62, 5,755.54 and 3,388.55

Step by Step Solution

1. Step 1: Write the proportion equation
   3,855.62 : 5,755.54 = 3,388.55 : x
2. Step 2: Convert to fraction form
   3,855.62/5,755.54 = 3,388.55/x
3. Step 3: Cross multiply
   3,855.62x = 5,755.54 × 3,388.55
4. Step 4: Simplify right side
   3,855.62x = 19,502,940.98
5. Step 5: Solve for x
   x = 19,502,940.98/3,855.62
6. Step 6: Final answer
   x = 5,058.32